00001 /*This file has been prepared for Doxygen automatic documentation generation.*/ 00015 /* Copyright (c) 2009 Atmel Corporation. All rights reserved. 00016 * 00017 * Redistribution and use in source and binary forms, with or without 00018 * modification, are permitted provided that the following conditions are met: 00019 * 00020 * 1. Redistributions of source code must retain the above copyright notice, this 00021 * list of conditions and the following disclaimer. 00022 * 00023 * 2. Redistributions in binary form must reproduce the above copyright notice, 00024 * this list of conditions and the following disclaimer in the documentation 00025 * and/or other materials provided with the distribution. 00026 * 00027 * 3. The name of Atmel may not be used to endorse or promote products derived 00028 * from this software without specific prior written permission. 00029 * 00030 * 4. This software may only be redistributed and used in connection with an Atmel 00031 * AVR product. 00032 * 00033 * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED 00034 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 00035 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE 00036 * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR 00037 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 00038 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00039 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 00040 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00041 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00042 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE 00043 * 00044 */ 00045 //_____ I N C L U D E S ___________________________________________________ 00046 #include <string.h> 00047 #include <stdio.h> 00048 00049 #include "compiler.h" 00050 #include "s_light.h" 00051 #include "board.h" 00052 #include "gpio.h" 00053 #include "adc.h" 00054 #include "FreeRTOS.h" 00055 00056 //_____ M A C R O S ________________________________________________________ 00057 00058 //_____ D E F I N I T I O N S ______________________________________________ 00059 00061 static volatile avr32_adc_t * adc= (volatile avr32_adc_t *) &AVR32_ADC; 00062 00063 //_____ D E C L A R A T I O N S ____________________________________________ 00064 00073 Bool b_light_get_value( char* buf, U32* result ) 00074 { 00075 int i_current_val; 00076 00077 00078 /* enable channel for sensor */ 00079 adc_enable( adc, ADC_LIGHT_CHANNEL ); 00080 /* start conversion */ 00081 adc_start( adc ); 00082 /* get value for sensor */ 00083 i_current_val = ( 00084 #ifdef EVK1100_REVA 00085 ADC_MAX_VALUE - 00086 #endif 00087 adc_get_value( adc, ADC_LIGHT_CHANNEL )) * 100 / ADC_MAX_VALUE; 00088 /* Disable channel for sensor */ 00089 adc_disable( adc, ADC_LIGHT_CHANNEL ); 00090 00091 sprintf( buf, "%d%%\r\n", i_current_val); 00092 00093 *result= i_current_val; 00094 return TRUE; 00095 }